Move all engine stuff to GoRetro. Still many interactions between game and engine code that there should not be.

component_bounder_screen_resetting.go

@@ -0,0 +1,46 @@
+package GoRetro
+
+/*
+ * --------------------
+ * BounderScreen
+ * --------------------
+ * A bounder which resets the position to the opposite of
+ * whichever bound was hit
+ */
+
+type bounderScreenResetting struct {
+	container *Element
+}
+
+func NewBounderScreenResetting(container *Element) *bounderScreenResetting {
+	return &bounderScreenResetting{container: container}
+}
+
+func (bounder *bounderScreenResetting) onDraw() error {
+	return nil
+}
+
+func (bounder *bounderScreenResetting) onUpdate() error {
+	b := bounder.container
+
+	// If any position exceeds the screen dimensions, wrap it to the
+	// opposite side
+	if b.Position.X > ScreenWidth {
+		b.Position.X = 0
+	}
+	if b.Position.X < 0 {
+		b.Position.X = ScreenWidth
+	}
+	if b.Position.Y > ScreenHeight {
+		b.Position.Y = 0
+	}
+	if b.Position.Y < 0 {
+		b.Position.Y = ScreenWidth
+	}
+
+	return nil
+}
+
+func (bounder *bounderScreenResetting) onCollision(other *Element) error {
+	return nil
+}